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Color management system - base classes + settings
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Jakub Melka
219
PdfForQtLib/sources/pdfcms.cpp
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219
PdfForQtLib/sources/pdfcms.cpp
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// Copyright (C) 2019 Jakub Melka
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//
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// This file is part of PdfForQt.
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//
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// PdfForQt is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// PdfForQt is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with PDFForQt. If not, see <https://www.gnu.org/licenses/>.
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#include "pdfcms.h"
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#pragma warning(push)
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#pragma warning(disable:5033)
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#include <lcms2.h>
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#pragma warning(pop)
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namespace pdf
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{
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bool PDFCMSGeneric::isCompatible(const PDFCMSSettings& settings) const
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{
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return settings.system == PDFCMSSettings::System::Generic;
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}
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QColor PDFCMSGeneric::getColorFromDeviceGray(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
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{
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Q_UNUSED(color);
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Q_UNUSED(intent);
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Q_UNUSED(reporter);
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return QColor();
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}
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QColor PDFCMSGeneric::getColorFromDeviceRGB(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
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{
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Q_UNUSED(color);
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Q_UNUSED(intent);
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Q_UNUSED(reporter);
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return QColor();
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}
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QColor PDFCMSGeneric::getColorFromDeviceCMYK(const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
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{
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Q_UNUSED(color);
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Q_UNUSED(intent);
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Q_UNUSED(reporter);
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return QColor();
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}
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QColor PDFCMSGeneric::getColorFromXYZ(const PDFColor3& whitePoint, const PDFColor& color, RenderingIntent intent, PDFRenderErrorReporter* reporter) const
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{
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Q_UNUSED(color);
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Q_UNUSED(intent);
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Q_UNUSED(reporter);
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Q_UNUSED(whitePoint);
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return QColor();
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}
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PDFCMSManager::PDFCMSManager(QObject* parent) :
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BaseClass(parent)
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{
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}
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const PDFColorSpaceIdentifiers& PDFCMSManager::getOutputProfiles() const
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{
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QMutexLocker lock(&m_mutex);
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return m_outputProfiles.get(this, &PDFCMSManager::getOutputProfilesImpl);
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}
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const PDFColorSpaceIdentifiers& PDFCMSManager::getGrayProfiles() const
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{
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QMutexLocker lock(&m_mutex);
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return m_grayProfiles.get(this, &PDFCMSManager::getGrayProfilesImpl);
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}
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const PDFColorSpaceIdentifiers& PDFCMSManager::getRGBProfiles() const
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{
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QMutexLocker lock(&m_mutex);
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return m_RGBProfiles.get(this, &PDFCMSManager::getRGBProfilesImpl);
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}
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const PDFColorSpaceIdentifiers& PDFCMSManager::getCMYKProfiles() const
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{
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QMutexLocker lock(&m_mutex);
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return m_CMYKProfiles.get(this, &PDFCMSManager::getCMYKProfilesImpl);
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}
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PDFCMSSettings PDFCMSManager::getDefaultSettings() const
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{
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PDFCMSSettings settings;
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auto getFirstProfileId = [](const PDFColorSpaceIdentifiers& identifiers)
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{
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if (!identifiers.empty())
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{
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return identifiers.front().id;
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}
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return QString();
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};
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settings.system = PDFCMSSettings::System::LittleCMS2;
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settings.outputCS = getFirstProfileId(getOutputProfiles());
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settings.deviceGray = getFirstProfileId(getGrayProfiles());
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settings.deviceRGB = getFirstProfileId(getRGBProfiles());
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settings.deviceCMYK = getFirstProfileId(getCMYKProfiles());
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return settings;
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}
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QString PDFCMSManager::getSystemName(PDFCMSSettings::System system)
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{
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switch (system)
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{
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case PDFCMSSettings::System::Generic:
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return tr("Generic");
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case PDFCMSSettings::System::LittleCMS2:
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{
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const int major = LCMS_VERSION / 1000;
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const int minor = (LCMS_VERSION % 1000) / 10;
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return tr("Little CMS %1.%2").arg(major).arg(minor);
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}
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default:
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{
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Q_ASSERT(false);
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break;
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}
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}
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return QString();
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}
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PDFColorSpaceIdentifiers PDFCMSManager::getOutputProfilesImpl() const
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{
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// Currently, we only support sRGB output color profile.
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return { PDFColorSpaceIdentifier::createSRGB() };
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}
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PDFColorSpaceIdentifiers PDFCMSManager::getGrayProfilesImpl() const
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{
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// Jakub Melka: We create gray profiles for temperature 5000K, 6500K and 9300K.
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// We also use linear gamma and gamma value 2.2.
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return {
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PDFColorSpaceIdentifier::createGray(tr("Gray D65, γ = 2.2"), "@GENERIC_Gray_D65_g22", 6500.0, 2.2),
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PDFColorSpaceIdentifier::createGray(tr("Gray D50, γ = 2.2"), "@GENERIC_Gray_D50_g22", 5000.0, 2.2),
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PDFColorSpaceIdentifier::createGray(tr("Gray D93, γ = 2.2"), "@GENERIC_Gray_D93_g22", 9300.0, 2.2),
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PDFColorSpaceIdentifier::createGray(tr("Gray D65, γ = 1.0 (linear)"), "@GENERIC_Gray_D65_g10", 6500.0, 1.0),
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PDFColorSpaceIdentifier::createGray(tr("Gray D50, γ = 1.0 (linear)"), "@GENERIC_Gray_D50_g10", 5000.0, 1.0),
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PDFColorSpaceIdentifier::createGray(tr("Gray D93, γ = 1.0 (linear)"), "@GENERIC_Gray_D93_g10", 9300.0, 1.0)
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};
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}
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PDFColorSpaceIdentifiers PDFCMSManager::getRGBProfilesImpl() const
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{
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// Jakub Melka: We create RGB profiles for common standars and also for
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// default standard sRGB. See https://en.wikipedia.org/wiki/Color_spaces_with_RGB_primaries.
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return {
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PDFColorSpaceIdentifier::createSRGB(),
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PDFColorSpaceIdentifier::createRGB(tr("HDTV (ITU-R BT.709)"), "@GENERIC_RGB_HDTV", 6500, QPointF(0.64, 0.33), QPointF(0.30, 0.60), QPointF(0.15, 0.06), 20.0 / 9.0),
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PDFColorSpaceIdentifier::createRGB(tr("Adobe RGB 1998"), "@GENERIC_RGB_Adobe1998", 6500, QPointF(0.64, 0.33), QPointF(0.30, 0.60), QPointF(0.15, 0.06), 563.0 / 256.0),
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PDFColorSpaceIdentifier::createRGB(tr("PAL / SECAM"), "@GENERIC_RGB_PalSecam", 6500, QPointF(0.64, 0.33), QPointF(0.29, 0.60), QPointF(0.15, 0.06), 14.0 / 5.0),
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PDFColorSpaceIdentifier::createRGB(tr("NTSC"), "@GENERIC_RGB_NTSC", 6500, QPointF(0.64, 0.34), QPointF(0.31, 0.595), QPointF(0.155, 0.07), 20.0 / 9.0),
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PDFColorSpaceIdentifier::createRGB(tr("Adobe Wide Gamut RGB"), "@GENERIC_RGB_AdobeWideGamut", 5000, QPointF(0.735, 0.265), QPointF(0.115, 0.826), QPointF(0.157, 0.018), 563.0 / 256.0),
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PDFColorSpaceIdentifier::createRGB(tr("ProPhoto RGB"), "@GENERIC_RGB_ProPhoto", 5000, QPointF(0.7347, 0.2653), QPointF(0.1596, 0.8404), QPointF(0.0366, 0.0001), 9.0 / 5.0)
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};
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}
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PDFColorSpaceIdentifiers PDFCMSManager::getCMYKProfilesImpl() const
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{
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return {
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};
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}
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PDFColorSpaceIdentifier PDFColorSpaceIdentifier::createGray(QString name, QString id, PDFReal temperature, PDFReal gamma)
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{
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PDFColorSpaceIdentifier result;
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result.type = Type::Gray;
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result.name = qMove(name);
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result.id = qMove(id);
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result.temperature = temperature;
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result.gamma = gamma;
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return result;
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}
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PDFColorSpaceIdentifier PDFColorSpaceIdentifier::createSRGB()
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{
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PDFColorSpaceIdentifier result;
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result.type = Type::sRGB;
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result.name = PDFCMSManager::tr("sRGB");
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result.id = "@GENERIC_sRGB";
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return result;
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}
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PDFColorSpaceIdentifier PDFColorSpaceIdentifier::createRGB(QString name, QString id, PDFReal temperature, QPointF primaryR, QPointF primaryG, QPointF primaryB, PDFReal gamma)
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{
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PDFColorSpaceIdentifier result;
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result.type = Type::RGB;
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result.name = qMove(name);
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result.id = qMove(id);
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result.temperature = temperature;
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result.primaryR = primaryR;
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result.primaryG = primaryG;
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result.primaryB = primaryB;
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result.gamma = gamma;
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return result;
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}
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} // namespace pdf
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